Pioneered in 19th-century greenhouses—including such remarkable structures as London's Crystal Palace of 1851—and used extensively in skyscraper construction in the 20th century, glass has become one of the primary architectural materials in modern building. This book, beautifully illustrated with color photos and plan drawings, tours two dozen architect-designed residences all over the world that rely heavily on glass to achieve openness, transparency, and an almost gravity-defying sense of lightness.